http://bugs.winehq.org/show_bug.cgi?id=12351
Summary: thread stack PAGE_GUARD/overflow handling (NT compatibility) Product: Wine Version: CVS/GIT Platform: All OS/Version: Linux Status: UNCONFIRMED Severity: minor Priority: P1 Component: -unknown AssignedTo: wine-bugs@winehq.org ReportedBy: focht@gmx.net
Hello,
this one is just follow up of recent .NET page guard patch commits, as requested by AJ ;-) Low priority.
--- snip example code ---- MEMORY_BASIC_INFORMATION mbi; DWORD oldProtect;
SetLastError(0xdeadbeef); ok(VirtualQuery( &mbi, &mbi, sizeof(MEMORY_BASIC_INFORMATION)) == sizeof(mbi)); ok(!VirtualProtect( mbi.BaseAddress, mbi.RegionSize, PAGE_GUARD, &oldProtect)); ok(GetLastError() == ERROR_INVALID_PARAMETER); --- snip example code ----
Glibc mprotect() code triggers the segfault.
Another test for NT compatibility, touch the last guard page...
--- snip example code ---- void stack_overflow() { char eat_stack[0x4000]; stack_overflow(); }
__TRY { stack_overflow(); } __EXCEPT(UnhandledExceptionFilter) { ok(GetExceptionCode() == EXCEPTION_STACK_OVERFLOW); } __ENDTRY
__TRY { stack_overflow(); } __EXCEPT(UnhandledExceptionFilter) { ok(GetExceptionCode() == EXCEPTION_ACCESS_VIOLATION); } __ENDTRY --- snip example code ----
Regards
http://bugs.winehq.org/show_bug.cgi?id=12351
--- Comment #1 from Alexandre Julliard julliard@winehq.org 2008-04-04 02:52:18 --- (In reply to comment #0)
--- snip example code ---- MEMORY_BASIC_INFORMATION mbi; DWORD oldProtect;
SetLastError(0xdeadbeef); ok(VirtualQuery( &mbi, &mbi, sizeof(MEMORY_BASIC_INFORMATION)) == sizeof(mbi)); ok(!VirtualProtect( mbi.BaseAddress, mbi.RegionSize, PAGE_GUARD, &oldProtect)); ok(GetLastError() == ERROR_INVALID_PARAMETER); --- snip example code ----
Glibc mprotect() code triggers the segfault.
Actually this is not testing guard pages, it just demonstrates that Wine is less strict about rejecting invalid protection flags. The protection needs to be something like PAGE_READWRITE|PAGE_GUARD, and then the VirtualProtect call will succeed both on Windows and Wine.
The second example works fine for me too, you just have to make the buffer smaller than a page to make sure to hit the last guard page.
http://bugs.winehq.org/show_bug.cgi?id=12351
Austin English austinenglish@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Keywords| |testcase
--- Comment #2 from Austin English austinenglish@gmail.com 2008-10-17 16:03:35 --- Is this still a problem in current (1.1.6 or newer) wine?
http://bugs.winehq.org/show_bug.cgi?id=12351
Anastasius Focht focht@gmx.net changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |FIXED Version|CVS/GIT |0.9.58.
--- Comment #3 from Anastasius Focht focht@gmx.net 2009-01-17 06:17:29 --- Hello,
adjusted version tag and marking this one fixed. If real world apps depend on certain behaviour of protection flags/page guards currently not covered by Wine one might look at it again.
Regards
http://bugs.winehq.org/show_bug.cgi?id=12351
Alexandre Julliard julliard@winehq.org changed:
What |Removed |Added ---------------------------------------------------------------------------- Status|RESOLVED |CLOSED
--- Comment #4 from Alexandre Julliard julliard@winehq.org 2009-01-30 11:04:04 --- Closing bugs fixed in 1.1.14.
http://bugs.winehq.org/show_bug.cgi?id=12351
Austin English austinenglish@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- Platform|All |Other
--- Comment #5 from Austin English austinenglish@gmail.com 2012-02-23 15:26:29 CST --- Removing deprecated 'All' Platform.
http://bugs.winehq.org/show_bug.cgi?id=12351
Anastasius Focht focht@gmx.net changed:
What |Removed |Added ---------------------------------------------------------------------------- Component|-unknown |ntdll Hardware|Other |x86
-
wine-bugs＠winehq.org